Mechanism for upsetting heads on fastening-pins for artificial teeth.



K. FINCKYH & P. ALMSTEDT.

MECHANISM FOR UPSETTING HEADS 0N FASTENING PINS FOR ARTIFICIAL TEETH.

' APPLICATION FILED OCT. 24, 1914.

1 1 67 341, Patented Jan. 4, 1916.

2 SHEETS-SHEET I.

COLUMBIA PLANOGRAPH co..wASHINuTcN, D. c.

K. FINCKH- & P. ALMSTEDT.

MECHANISM FOR UPSETTING HEADS 0N FASTENING PINS FOR ARTIFICIAL TEETH.

APPLICATION FILED OCT' 24. I914.

Ebb

IIIIIII "VCCILUMBIA PLANOGRAPH 60., WASHINGTON, D. c.

Patented Jan. 4, 1916.

2 SHEETS-SHEET 2.

i or i KARL 015 To all who/1L it may com-em operation. The pins 7 are inserted into the r a T if A! :be it mourn that re. limit i 11s on: a the c by hand or by mean i a special reed- German citir-zen, residing at lfierlin, 111g apparatus. The upsetting; punch proper many, it. Pa" '1. a German city 9 mounted on the 1ft 7t uzh is press-co 5 zen. residing Perl..i-l?aumschulenweg by spring ao'ainst the rod actuating cam a, 1 .N i ,2. .2 ..1 Germanv. have lllVQiltQtl a new and usetul which rotates in the miection oi the aiiow U II I hilechanisin tor Upsettirg Heads on l o.)- in Fig. 1. Around the rod 1'1. if: arranged a telling-Pins tor r irtificial Teeth, of which solenoid 7c raversecl by a continuoi s curr n the fiillowii'ig isa specification. he Punch 0 which, as previously l8 Our invention relates to a press for formserves as an abutment. ismoi'able with ing he: (ls on pins b upsetting particularly spect o support the rod 1., be

on pins of mal. dimensions as for instance, Within soul rod by a cap, scrc red on pins c i artificial teeth to plates. and by the ston l provideo The new press is prorided with a (li for the piston Z, on which receiving and holdine the pins during the g'e l a shoulder n for pressing operation and with two independl noihgifiht or tum 7i ently driven punches 11' stamps, the one servsu port. ll 1 ing as the press proper and the other one 0111186 111 all serving as an abutment f e feature sleere p.

t rests,

I he un- ,3 L 0 ii-ch within its 1 fed a informed with an ich shoes the spring controlled i e press they he operation oi the press is as follows: move at times separately and at times simul- The punch a. serving as the abutment. is taneously, and then at times in the same raised into its uppermost position by the ant at times in opposite directions. spring acting on. the rod 7). At the same Another feature is the provision of a time th (he (1 closed by the punch (Fig. spring pressed member to allow for small 1). l i hile the punch 9 rem ins in this posif) .11 of the invention is that the said two punches Th1? (W115 81m 1 are l" Slut r or stamps are so ctu ted th t during: the li'ieans, at the same angular velocity.

progress of tie operation o: t

diii'erences in the lengths of the pins which tion, the 1 inch c is moved by means of cam would otherwise lead to damage oi? the actua. into tile position 1n which, in the subse- P punch in qucnt pressing (meration. it terms the abut- Zia ating mechanism of the upsettin if 4. the formation of the head. ment for the pin f, which in the meantime Still another feature is the magnetization has been inserted into the die a. oi one of the punches so that the pin will The punch c then remains stationary while adhere thereto and may be removed with the punch is moved upward upsetting; the accuracy from the die aiiter the pressing head of the pin (l? h ow lioth operation is completed. punches move in the same direction, down- Finally, another feature is the resilient ward, the punch 9 moving more quickly arrangement oi the punch which to ms the than th punch a. and the pin now formed head is thus removed from the die 6 The pin is finally removed from @ther features or objects oi the invention the punch g by hand or by means of any will appear from the following description suitable known means and the punches are of the press embodyi; e; the invention and retur e-zl into original po ion. 2; the of the operation thereof, and will be pointed e ection stroke the pin adheres to the press out in the appended claims. puncl Gne embodiment of the invention is illus solenoid 7t. trated in the drawings, in which instead of the one piece bored die for Figures 1 to e illustrate the separate onerholding the pin during the upsetting operative positions of the two punches. and Fig. atio-n, as shown in the drawines. it may em- 50 5 illustrates the arrangement with resiliploy any other known type of die whether ently arranged punches. oi? one piece or of several pieces.

As shown, the cam a which rotates in the if the pin f which is inserted into the die direction of the arrow in 1. moves the e is little longer than the normal length spring loaded rod 6 carrying the punch c of the pins, t 1e spring; 0, which takes up the which forms the abutment in the pressing whole pressure, is compresse and the sleeve 1. the latter is magnetized by the 7) in the rod 7 is displaced a little, thus avoiding damage to the punch 9.

At the beginning of the pressing operation the comparatively weak spring n is compressed until the projection m limits the backward movement of the punch a. The movable, resilient arrangement of the punch 0 results in an increase in the ejection movement without necessitating a lengthening of the punch c which might cause damage to the punch in the pressing operation.

Vi e claim:

1. In combination, in head upsetting mechanism for pins, a die having a vertical pin holding bore, an upsetting stamp below and an abutment stamp above the die, and

1 means for first moving the upsetting stamp upwardly so as to close the bore below, then movinp the abutment stamp downwardly into the bore and in contact with the pin, then further moving the upsetting stamp upwardly so as to upset the lower end of the pin, and finally moving both stamps downwardly so as to push the headed pin from the die.

In combination, in head upsetting mechanism for pins, a die having a vertical pin holding bore, an upsetting stamp below and an abutment stamp above the die, a magnetizing solenoid mounted on said upsetting stamp, and means for first moving the upsetting stamp upwardly so as to close the bore below, then movingthe abutment stamp, downwardly into the bore, and in contact with the pin, then further moving the upsetting stamp upwardly so "as to upset the lower end of the pin, and finally moving both stamps downwardly so as to push the headed pin from the die.

In combination, in head upsetting mechanism for pins, a die having a vertical pin holding bore, an upsetting stamp below said die, an abutment stamp above said die, a support with which said abutment stamp is slidably engaged said support having a stop, a spring tending to hold stop and abutment stamp apart, and means for first moving the upsetting stamp upwardly while the abutment stamp is in contact both with the pin and the stop of the support so as to upset the lower end oi? the pin and then simultaneously moving the support and the upsetting stamp downwardly the stamp being moved through a greater distance than the support so to push the leaded pin from the die.

In witness whereof, we have hereunto set our hands.

KARL FINCKH, PAUL ALMSTEDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

